DateUtils today offset tests

uhabits-core/src/jvmTest/java/org/isoron/uhabits/core/utils/DateUtilsTest.kt

@@ -165,6 +165,30 @@ class DateUtilsTest : BaseUnitTest() {
         assertThat(startOfTomorrowWithOffset, equalTo(startOfTomorrow))
     }
 
+    @Test
+    fun testGetStartOfTodayWithOffset_priorToOffset() {
+        val hourOffset = 3
+        setStartDayOffset(hourOffset, 0)
+        setFixedTimeZone(TimeZone.getTimeZone("GMT"))
+        val startOfYesterday = unixTime(2017, Calendar.JANUARY, 1, 0, 0)
+        val priorToOffset = unixTime(2017, Calendar.JANUARY, 2, hourOffset - 1, 0)
+        setFixedLocalTime(priorToOffset)
+        val startOfTodayWithOffset = DateUtils.getStartOfTodayWithOffset()
+        assertThat(startOfYesterday, equalTo(startOfTodayWithOffset))
+    }
+
+    @Test
+    fun testGetStartOfTodayWithOffset_afterOffset() {
+        val hourOffset = 3
+        setStartDayOffset(hourOffset, 0)
+        setFixedTimeZone(TimeZone.getTimeZone("GMT"))
+        val startOfToday = unixTime(2017, Calendar.JANUARY, 1, 0, 0)
+        val afterOffset = unixTime(2017, Calendar.JANUARY, 1, hourOffset + 1, 0)
+        setFixedLocalTime(afterOffset)
+        val startOfTodayWithOffset = DateUtils.getStartOfTodayWithOffset()
+        assertThat(startOfToday, equalTo(startOfTodayWithOffset))
+    }
+
     @Test
     fun testTruncate_dayOfWeek() {
         val field = DateUtils.TruncateField.WEEK_NUMBER